<?php
/*
Validator classes MUST implement 2 functions:

1) getError(): returns the error message

2) isValid(MSDBField field, mixed value): returns true or false and sets the error message if any
*/


class MSDBValidator_Email {
	
	var $errorMessage;
	
	function getError() {
		return $this->errorMessage;	
	}
	
	function isValid(&$field, $data) {
		$this->errorMessage = "";
		$tmpErrorMessage = "Enter a valid email for " . $field->ValidationTitle;

		
		// First, we check that there's one @ symbol, and that the lengths are right
		if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email)) {
			// Email invalid because wrong number of characters in one section, or wrong number of @ symbols.
			$this->errorMessage = $tmpErrorMessage;
			return false;
		}
	
  		// Split it into sections to make life easier
  		$email_array = explode("@", $email);
  		$local_array = explode(".", $email_array[0]);
  		
  		for ($i = 0; $i < sizeof($local_array); $i++) {
			if (!ereg("^(([A-Za-z0-9!#$%&'*+/=?^_`{|}~-][A-Za-z0-9!#$%&'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$", $local_array[$i])) {
				$this->errorMessage = $tmpErrorMessage;
				return false;    
			}  
  		}  		
		
		  		
		if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) {
			// Check if domain is IP. If not, it should be valid domain name
			$domain_array = explode(".", $email_array[1]);
				
			if (sizeof($domain_array) < 2) {
				$this->errorMessage = $tmpErrorMessage;
				return false;
				// Not enough parts to domain
			}
			for ($i = 0; $i < sizeof($domain_array); $i++) {
				if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$", $domain_array[$i])) {
					$this->errorMessage = $tmpErrorMessage;
					return false;
				}
			}
		 }
		 	
		return true;
	}
}
?>